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Geology 1
calicite
Term | Meaning |
---|---|
rock | a group of minerals bound together |
magma | molten rock beneath Earth's surface |
igneous rocks | formed from the cooling and solidification of hot, molten rock |
uniformitarianism | the present is the key to the past |
mafic | dark colored, high density igneous rock |
felsic | light colored, low density igneous rock |
texture | the size and arrangement of mineral grains (crystals) in igneous rock |
lava | molten rock at Earth's surface |
fine-grained | texture of an igneous rock consisting of extremely small crystals |
coarse-grained | texture of an igneous rock consisting of interlocking visible crystals |
vesicular | texture of an igneous rock that is filled with vesicles (bubbles or holes from released gases) |
plutonic (intrusive) rocks | igneous rocks that cool slowly and form below Earth's surface |
volcanic (extursive) rocks | igneous rocks that cool quickly at Earth's surface |
glassy | texture of an igneous rock that cooled too quickly for crystals to grow |
sediment | broken pieces of rock |
clastic | small bits of broken rock distributed by wind and water |
chemical | results from a body of water which has evaporated |
organic | contains remains of living organisms |
calcareous | cement made of lime or calicite |
siliceous | cement made of silica/quartz, very resistant |